Sound Pressure Levels; Sound Pressure Level; Nc Curves - Mitsubishi Electric Mr.SLIM SFZ Series Technical & Service Manual

[ V SOUND PRESSURE LEVELS ]

[1] SOUND PRESSURE LEVELS

V SOUND PRESSURE LEVELS

1. Sound pressure level

Floor standing concealed
* Measurements were taken without the duct being connected to the indoor unit outlet when the external static pressure is 0 Pa.

2. NC curves

SFZ-M25VA(-ET).TH
70.0
65.0
60.0
55.0
50.0
45.0
40.0
35.0
30.0
25.0
20.0
15.0
10.0
Approximate minimum
audible limit on
5.0
continuous noise
0.0
63 125 250
Octave band center frequencies <Hz>
70.0
65.0
60.0
55.0
50.0
45.0
40.0
35.0
30.0
25.0
20.0
15.0
10.0
Approximate minimum
audible limit on
5.0
continuous noise
0.0
63 125 250
Octave band center frequencies <Hz>
HWE1909A
(External static pressure 0Pa)
High
Middle Low
500 1k 2k 4k
(External static pressure 25Pa)
High
Middle Low
500 1k 2k 4k
Measurement location
1.5m
Aux. duct
70.0
65.0
60.0
NC-60
55.0
50.0
NC-50
45.0
40.0
NC-40
35.0
30.0
NC-30
25.0
20.0
NC-20
15.0
10.0
Approximate minimum
audible limit on
5.0
continuous noise
0.0
8k 63 125
70.0
65.0
60.0
NC-60
55.0
50.0
NC-50
45.0
40.0
NC-40
35.0
30.0
NC-30
25.0
20.0
NC-20
15.0
10.0
Approximate minimum
audible limit on
5.0
continuous noise
0.0
8k 63 125
- 20 -
(External static pressure 40Pa)
High
Middle
250 500 1k 2k
Octave band center frequencies <Hz>
(External static pressure 60Pa)
High
Middle
250 500 1k 2k
Octave band center frequencies <Hz>
Low
NC-60
NC-50
NC-40
NC-30
NC-20
4k 8k
Low
NC-60
NC-50
NC-40
NC-30
NC-20
4k 8k
GB